UTCP Code Mode MCP Bridge

Execute TypeScript code with direct tool access through MCP.

An advanced MCP server that brings UTCP Code Mode to the MCP ecosystem, allowing you to execute TypeScript code with all registered tools available as native TypeScript functions.

🚀 Quick Start

Add this configuration to your MCP client (Claude Desktop, etc.):

{
  "mcpServers": {
    "utcp-codemode": {
      "command": "npx",
      "args": ["@utcp/code-mode-mcp"],
      "env": {
        "UTCP_CONFIG_FILE": "/path/to/your/.utcp_config.json"
      }
    }
  }
}

That's it! No installation required. The bridge will automatically:

• Download and run the latest version via npx
• Load your UTCP configuration from the specified path
• Register all your UTCP manuals as tools available in TypeScript code
• Enable TypeScript code execution with hierarchical tool access (e.g., manual.tool())

🔧 Configuration

Create a .utcp_config.json file to configure your tools and services:

{
    "load_variables_from": [
      {
        "variable_loader_type": "dotenv",
        "env_file_path": ".env"
      }
    ],
    "manual_call_templates": [
      {
          "name": "openlibrary",
          "call_template_type": "http",
          "http_method": "GET", 
          "url": "https://openlibrary.org/static/openapi.json",
          "content_type": "application/json"
      }
    ],
    "post_processing": [
      {
          "tool_post_processor_type": "filter_dict",
          "only_include_keys": ["name", "description"],
          "only_include_tools": ["openlibrary.*"]
      }
    ],
    "tool_repository": {
      "tool_repository_type": "in_memory"
    },
    "tool_search_strategy": {
      "tool_search_strategy_type": "tag_and_description_word_match"
    }
}

Enabling CLI Support

Important: CLI protocol support is disabled by default for security reasons. To enable CLI tool execution, you need to explicitly register the CLI plugin in 'index.ts'.

import { register as registerCli } from "@utcp/cli";

// Enable CLI support
registerCli();

Security Note: Only enable CLI if you trust the code that will be executed, as CLI tools can execute arbitrary commands on your system.

🛠️ Available MCP Tools

The bridge exposes these MCP tools for managing your UTCP Code Mode ecosystem:

• register_manual - Register new UTCP manuals/APIs
• deregister_manual - Remove registered manuals
• search_tools - Find tools by description with TypeScript interfaces
• list_tools - List all registered tool names
• get_required_keys_for_tool - Get required environment variables
• tool_info - Get complete tool information with TypeScript interface
• call_tool_chain - Execute TypeScript code with direct tool access

📁 What is UTCP?

The Universal Tool Calling Protocol (UTCP) allows you to:

• Connect to any API via HTTP, OpenAPI specs, or custom formats
• Use command-line tools with automatic argument parsing (requires explicit CLI plugin registration)
• Process text and files with built-in utilities
• Chain and combine multiple tools seamlessly

With this MCP bridge, all your UTCP tools become available in Claude Desktop and other MCP clients.

Optional Protocols: CLI requires explicit registration for security (see "Enabling CLI Support" above).

💻 Code Mode Example

The main feature of this bridge is the ability to execute TypeScript code with direct access to all registered tools:

// Example using call_tool_chain
const result = await call_tool_chain(`
  // Get user data from an API
  const user = await user_service.getUserProfile({ userId: "123" });
  console.log('User data:', user);
  
  // Process the data with another tool
  const processed = await data_processor.analyzeUserBehavior({
    userData: user,
    timeframe: "30days"
  });
  
  // Generate a report
  const report = await reporting.generateInsights({
    analysis: processed,
    format: "summary"
  });
  
  return {
    userId: user.id,
    totalActions: processed.actionCount,
    topInsight: report.insights[0]
  };
`);

Key Benefits:

• Hierarchical Access: Use manual.tool() syntax to avoid naming conflicts
• Type Safety: Get TypeScript interfaces for all tools via search_tools or tool_info
• Code Execution: Chain multiple tool calls in a single code block
• Error Handling: Proper error handling with timeout support

🌟 Features

• ✅ Zero installation - Works via npx
• ✅ Universal compatibility - Works with any MCP client
• ✅ Dynamic configuration - Update tools without restarting
• ✅ Environment isolation - Each project can have its own config
• ✅ Comprehensive tool management - Register, search, call, and inspect tools